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| author | Michal Simek <monstr@monstr.eu> | 2007-05-08 14:52:52 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2007-05-08 14:52:52 +0200 |
| commit | 1a50f164beb065f360fbddb76029607d6b099698 (patch) | |
| tree | a56a4027d0c68c5a5d9fdc15f0974650dd4fcb42 | |
| parent | ab874d5047e5d30dbc1e517ff26083efffa98ecb (diff) | |
| download | u-boot-imx-1a50f164beb065f360fbddb76029607d6b099698.zip u-boot-imx-1a50f164beb065f360fbddb76029607d6b099698.tar.gz u-boot-imx-1a50f164beb065f360fbddb76029607d6b099698.tar.bz2 | |
add: Microblaze V5 exception handling
| -rw-r--r-- | cpu/microblaze/exception.c | 10 | ||||
| -rwxr-xr-x | include/asm-microblaze/asm.h | 8 | ||||
| -rw-r--r-- | include/configs/ml401.h | 1 |
3 files changed, 17 insertions, 2 deletions
diff --git a/cpu/microblaze/exception.c b/cpu/microblaze/exception.c index b135acb..87ecbea 100644 --- a/cpu/microblaze/exception.c +++ b/cpu/microblaze/exception.c @@ -23,15 +23,16 @@ */ #include <common.h> +#include <asm/asm.h> void _hw_exception_handler (void) { int address = 0; int state = 0; /* loading address of exception EAR */ - __asm__ __volatile ("mfs %0,rear"::"r" (address):"memory"); + MFSEAR(address); /* loading excetpion state register ESR */ - __asm__ __volatile ("mfs %0,resr"::"r" (state):"memory"); + MFSESR(state); printf ("Hardware exception at 0x%x address\n", address); switch (state & 0x1f) { /* mask on exception cause */ case 0x1: @@ -49,6 +50,11 @@ void _hw_exception_handler (void) case 0x5: puts ("Divide by zero exception\n"); break; +#ifdef MICROBLAZE_V5 + case 0x1000: + puts ("Exception in delay slot\n"); + break; +#endif default: puts ("Undefined cause\n"); break; diff --git a/include/asm-microblaze/asm.h b/include/asm-microblaze/asm.h index 26e3691..8302ed8 100755 --- a/include/asm-microblaze/asm.h +++ b/include/asm-microblaze/asm.h @@ -48,12 +48,20 @@ __asm__ __volatile__ ("cput %0, rfsl" #fslnum ::"r" (val)); /* CPU dependent */ +/* machine status register */ #define MFS(val) \ __asm__ __volatile__ ("mfs %0, rmsr":"=r" (val)); #define MTS(val) \ __asm__ __volatile__ ("mts rmsr, %0"::"r" (val)); +/* exception status register */ +#define MFSEAR(val) \ + __asm__ __volatile ("mfs %0,rear":"=r" (val)); + +#define MFSESR(val) \ + __asm__ __volatile ("mfs %0,resr":"=r" (val)); + /* get return address from interrupt */ #define R14(val) \ __asm__ __volatile__ ("addi %0, r14, 0":"=r" (val)); diff --git a/include/configs/ml401.h b/include/configs/ml401.h index 327d31c..4cfe802 100644 --- a/include/configs/ml401.h +++ b/include/configs/ml401.h @@ -28,6 +28,7 @@ #include "../board/xilinx/ml401/xparameters.h" #define CONFIG_MICROBLAZE 1 /* MicroBlaze CPU */ +#define MICROBLAZE_V5 1 #define CONFIG_ML401 1 /* ML401 Board */ /* uart */ |